How Accurate Is 3-Dimensional Computer-Assisted Planning for Segmental Maxillary Surgery?

2020 ◽  
Vol 78 (9) ◽  
pp. 1597-1608
Author(s):  
Tae-Geon Kwon ◽  
Michael Miloro ◽  
Michael D. Han
Keyword(s):  
Computer Assisted ◽  
3 Dimensional ◽  
Maxillary Surgery

Serial thin sectioning for pre- and post-embedding immunohistochemistry: Achieving consistent and reliable results for a 3-D reconstruction

1993 ◽  
Vol 51 ◽  
pp. 328-329
Author(s):  
Antonia M. Milroy
Keyword(s):  
Nervous System ◽  
Computer Assisted ◽  
Serial Sectioning ◽  
Electron Microscopic ◽  
High Quality ◽  
New Techniques ◽  
3 Dimensional ◽  
Multiple User ◽  
Thin Sectioning ◽  
Subcellular Level

In recent years many new techniques and instruments for 3-Dimensional visualization of electron microscopic images have become available. Higher accelerating voltage through thicker sections, photographed at a tilt for stereo viewing, or the use of confocal microscopy, help to analyze biological material without the necessity of serial sectioning. However, when determining the presence of neurotransmitter receptors or biochemical substances present within the nervous system, the need for good serial sectioning (Fig. 1+2) remains. The advent of computer assisted reconstruction and the possibility of feeding information from the specimen viewing chamber directly into a computer via a camera mounted on the electron microscope column, facilitates serial analysis. Detailed information observed at the subcellular level is more precise and extensive and the complexities of interactions within the nervous system can be further elucidated.We emphasize that serial ultra thin sectioning can be performed routinely and consistently in multiple user electron microscopy laboratories. Initial tissue fixation and embedding must be of high quality.

scholarly journals The Effect of Uphill and Downhill Slopes on Weight Transfer, Alignment, and Shot Outcome in Golf

2018 ◽  
Vol 34 (5) ◽  
pp. 361-368 ◽  
Author(s):  
Glen M. Blenkinsop ◽  
Ying Liang ◽  
Nicholas J. Gallimore ◽  
Michael J. Hiley
Keyword(s):  
Center Of Pressure ◽  
Performance Outcomes ◽  
Computer Assisted ◽  
Ball Speed ◽  
Transfer Alignment ◽  
3 Dimensional ◽  
The Right ◽  
Weight Transfer ◽  
Kinetics Of ◽  
Kinematics And Kinetics

The aim of the study was to examine changes in weight transfer, alignment, and shot outcome during golf shots from flat, uphill, and downhill slopes. Twelve elite male golfers hit 30 shots with a 6-iron from a computer-assisted rehabilitation environment used to create 5° slopes while collecting 3-dimensional kinematics and kinetics of the swing. A launch monitor measured performance outcomes. A shift in the center of pressure was found throughout the swing when performed on a slope, with the mean position moving approximately 9% closer to the lower foot. The golfers attempted to remain perpendicular to the slope, resulting in weight transfer toward the lower foot. The golfers adopted a wider stance in the sloped conditions and moved the ball toward the higher foot at address. Ball speed was not significantly affected by the slope, but launch angle and ball spin were. As the coaching literature predicted, golfers were more likely to hit shots to the left from an uphill slope and to the right from a downhill slope. No consistent compensatory adjustments in alignment at address or azimuth were found, with the change in final shot dispersion resulting from the lateral spin of the ball.

Tele-3-Dimensional Computer-Assisted Functional Endoscopic Sinus Surgery: New Dimension in the Surgery of the Nose and Paranasal Sinuses

2002 ◽  
Vol 127 (6) ◽  
pp. 549-557 ◽  
Author(s):  
Ivica Klapan ◽  
Ljubimko Šimičić ◽  
Ranko Rišavi ◽  
Nada Bešenski ◽  
Karlo Pasarić ◽  
...  
Keyword(s):  
Operating Room ◽  
Paranasal Sinuses ◽  
Endoscopic Sinus Surgery ◽  
Optimal Path ◽  
3D Models ◽  
Functional Endoscopic Sinus Surgery ◽  
Sinus Surgery ◽  
Computer Assisted ◽  
3 Dimensional ◽  
Nose And Paranasal Sinuses

One of the main objectives of our 3-dimensional (3D) computer-assisted functional endoscopic sinus surgery was to design a computer-assisted 3D approach to the presurgical planning, intraoperative guidance, and postoperative analysis of the anatomic regions of the nose and paranasal sinuses. Such an extremely powerful approach should allow better insight into the operating field, thereby significantly increasing the safety of the procedure. The last step to implementing the technology in the operating room was to connect the computer workstations and video equipment to remote locations by using a high-speed, wide-bandwidth computer network. During patient preparation, the surgeon in the operating room consulted remote experienced and skillful surgeons by viewing CT images and 3D models on computer workstations. The surgeon and consultants used software for CT image previews and 3D model manipulations on top of collaboration tools to define the pathosis, produce an optimal path to the pathosis, and decide how to perform the real surgical procedure. With tele-flythrough or tele-virtual endoscopy rendered through the use of 3D models, both surgeons can preview all the characteristics of the region (ie, anatomy, pathosis) and so predict and determine the next steps of the operation. This ensures greater safety thanks to the operation guidance and reduces the possibility of intraoperative error. The duration of the teleconsultation is thus shortened, which may prove the greatest benefit of tele-3D computer-assisted surgery. If this method were used, clinical institutions would spend less money for telesurgical consultation.

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